GrabOn Interview Questions and Answers

DevOps with cloud involves integrating development and operations processes with cloud technologies.

• Implementing continuous integration and continuous deployment (CI/CD) pipelines using cloud services like AWS CodePipeline or Azure DevOps

• Automating infrastructure provisioning and management using tools like Terraform or CloudFormation

• Monitoring and logging applications and infrastructure using cloud-native tools like CloudWatch or Azure Monitor

XPath is a way to navigate through elements on a webpage using their attributes.

• Inspect the element on the webpage to identify unique attributes like id, class, name, etc.

• Construct the XPath using the unique attributes to locate the element.

• Use tools like Chrome Developer Tools or Firebug to help generate XPath.

• Avoid using absolute XPath as they can be brittle and prone to breaking.

• Consider using relative XPath for better maintainability.

BDD Cucumber is a behavior-driven development tool that allows writing test cases in plain English using Gherkin syntax.

• BDD Cucumber is used for writing acceptance tests in a human-readable format

• It allows collaboration between technical and non-technical team members

• Cucumber with Java can be used to automate tests and validate application behavior

Java program to find unique characters in a string

• Create a boolean array of size 256 to track character occurrences

• Iterate through the string and mark characters as seen in the array

• Check if a character has already been seen before marking it as unique

Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in the superclass.

• Method overloading allows multiple methods with the same name but different parameters in the same class.

• Method overriding involves a subclass providing a specific implementation of a method that is already provided by its superclass.

• Example of method over...read more

Bucketing is used for evenly distributing data across a fixed number of files, while partitioning is used for organizing data based on specific columns.

• Bucketing evenly distributes data across a fixed number of files

• Partitioning organizes data based on specific columns

• Bucketing is commonly used in Apache Hive, while partitioning is commonly used in Apache Spark

Coroutines in Kotlin are a way to perform asynchronous programming in a more concise and readable manner.

• Coroutines allow for easy handling of asynchronous tasks without the complexity of callbacks or traditional threading.

• They can be used to perform long-running tasks without blocking the main thread.

• Coroutines can be cancelled or paused/resumed easily, making them very flexible for handling different scenarios.